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tick, tick, tick of the vacuum pump at idle

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Old 04-27-2017, 08:01 PM
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mm450exc
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Default tick, tick, tick of the vacuum pump at idle
Get that random tick tick at idle. Looks like vacuum pump. Normal or sign that it's failing?
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Old 04-28-2017, 01:43 PM
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Worn push rod in the vacuum pump. Pump the brakes and the tick goes away.
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